Miami, FL, United States, 25 March 2019 | AP /

Nick Kyrgios thumped Dusan Lajovic 6-3 6-1 in a powerhouse performance to progress to the Miami Open round of 16.

The Australian world No.27 was too strong for his Serbian opponent, slamming 12 aces and winning 81 per cent of first-serve points.

He’ll play Croatian Borna Coric, who saw off Frenchman Jeremy Chardy in a late-finishing third round match.

“Borna is an unbelievable competitor and one of the best players in the world. He knows how to win matches and is an unbelievable athlete. He moves incredibly well and I know he won’t give me a single point,” Kyrgios told

“I’m not going to think about it right now though. I have a day off tomorrow.”

Fellow Australian Jordan Thompson will aim to join him in the fourth round when he takes on Grigor Dimitrov, while Ash Barty – already into the fourth round of the women’s event – faces Kiki Bertens for a place in the quarters.

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Both of those matches will take place on Monday local time.

Kyrgios played with flair in the opening set, belting 20 winners while committing just eight unforced errors.

He was even more ruthless in the second set, racing through it in under half an hour to complete victory.

“I don’t know what tomorrow is going to bring on the tennis court, but I’m going out there and having fun,” Kyrgios said. “I served well and returned well and I’m really happy. Today it was a pretty good all-around performance.”

In his four visits to Miami, Kyrgios has never fallen before the fourth round; in 2016 and 2017 he progressed to the semifinals.